BATTERY AND SUPER CAPACITOR COMBINATION IN ELECTRIC BIKE

• Main Authors: NIKHIL HATWAR, HAREN DODKE, AYUSH PUSHKAR, AKSHAY JUNGHARE, ANURAG BISEN, M M KHANAPURKAR
• Format: Patent
• Language: English
• Published: 17.04.2015
• Subjects: ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS INVEHICLES; ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OFTRANSMISSIONS IN VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GASEXHAUST OR FUEL SUPPLY OF PROPULSION UNITS, IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; PERFORMING OPERATIONS; TRANSPORTING; VEHICLES IN GENERAL

The market for electric bikes, scooters and bicycles is growing. And there are numerous brands of E-bikes emerging locally. All most all incorporate a rear wheel BLDC hub motor; lead acid battery pack, a light weight chassis, a controller. And with this in general they all achieve average speed of 30-50km/hr, range of 70km/charge. And other drawback with them is the long charging time of 6-8 hrs and short lifespan of battery pack i.e. around 2 years. Considering these limitations we are designing an electric bike which will give a better performance with the use of a hybrid system of battery and supercapacitor. Supercapacitor module will provide the high current required during starting and acceleration, and eventfully will help increasing lifespan of battery. A secondary source, like regenerative braking or a small solar panel module could be availed onboard so as to charge battery/ supercapacitor. Following invention is described in detail with the help of Figure 1 of Sheet 1 showing proposed model of present invention, Figure 2 of Sheet 1 showing flow chart of proposed algorithm, Figure 3 of Sheet 2 showing bi directional buck-boost converter, Figure 4 of Sheet 2 showing Supercapacitor bank charging simulation circuit.